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New Scientist International Edition

New Scientist International Edition 21/28-dec-19

New Scientist covers the latest developments in science and technology that will impact your world. New Scientist employs and commissions the best writers in their fields from all over the world. Our editorial team provide cutting-edge news, award-winning features and reports, written in concise and clear language that puts discoveries and advances in the context of everyday life today and in the future.

Paese:
United Kingdom
Lingua:
English
Editore:
New Scientist Ltd
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4 minuti
signs of hope

THERE are many who believe, as this decade comes to a close, that the world is going to hell in a handcart. The failure to take dramatic action on climate change, the perceived coarsening of public debate, the rise of instantly transmitted fake news and populist movements that rail against experts and facts are all taken as evidence that humanity is in the grip of a downward spiral. We know you, as readers of New Scientist, share our love of evidence and rational problem-solving. So you probably already know that the facts don’t support this narrative. In fact, by most measures, the world is getting better – for humans at least. That is largely due to science and technology delivering humanitarian and progressive solutions to problems such as disease, hunger, lack of…

1 minuti
new scientist

PUBLISHING & COMMERCIAL Display advertising Tel +44 (0)20 7611 1291 Email displayads@newscientist.com Commercial director Chris Martin Display sales manager Justin Viljoen Lynne Garcia, Bethany Stuart, Henry Vowden, (ANZ) Richard Holliman Recruitment advertising Tel +44 (0)20 7611 1204 Email nssales@newscientist.com Recruitment sales manager Viren Vadgama Nicola Cubeddu, (US) Jeanne Shapiro New Scientist Live Tel +44 (0)20 7611 1245 Email live@newscientist.com Events director Adrian Newton Creative director Valerie Jamieson Event manager Henry Gomm Sales director Jacqui McCarron Exhibition sales manager Rosie Bolam Marketing manager Katie Cappella Events team support manager Rose Garton Marketing executive Jessica Lazenby-Murphy Marketing Head of campaign marketing James Nicholson Poppy Lepora Head of customer experience Emma Robinson Head of data analytics Tom Tiner Web development Maria Moreno Garrido, Tom McQuillan, Amardeep Sian MANAGEMENT Chief executive Nina Wright Finance director Jenni Prince Chief technology officer Chris Corderoy Marketing director Jo Adams Human resources Shirley Spencer HR coordinator Serena Robinson Facilities manager Ricci Welch Executive assistant Lorraine Lodge Receptionist Alice Catling Non-exec chair Bernard Gray Senior non-exec director…

1 minuti
climate summit failure

THE UK faces the task of breaking the deadlock on international climate negotiations next year, after the COP25 talks ended in Madrid on Sunday. The meeting overran to become the longest climate summit yet as delegates from over 190 countries struggled to reach agreement on key issues on the framework underpinning the Paris climate deal. Drawing up rules on a carbon market between countries has been deferred until next year, when the UK hosts a landmark climate summit in Glasgow. António Guterres, the UN secretary general, said he was disappointed with the outcome, and that leaders had missed an opportunity to be more ambitious on climate change mitigation, adaptation and finance for poorer countries. “But we must not give up, and I will not give up,” he tweeted. Scientists said the “minimum compromise”…

1 minuti
planes to fly close together to cut fuel

THE aviation industry is planning to test whether mimicking the way birds fly in formation can reduce fuel use, in an effort to cut emissions. Plane manufacturer Airbus will run two demonstrator flights in the first half of next year. The idea, inspired by the V-formation that geese migrate in, is for one plane to take off soon after another, following closely and precisely enough to take advantage of the air vortex produced in the first plane’s wake. It could cut fuel use by 5 to 10 per cent per trip, says Airbus. If initial tests go well, the firm will then try the technique with a real passenger plane following an Airbus demonstrator flight, says Sandra Bour Schaeffer at Airbus, with tests planned for 2021. The technique could be used on…

3 minuti
paradox-free time travel

WOULD-BE time travellers have long wrestled with the grandfather paradox: if you change things in the past and prevent yourself ever existing, how did you time travel in the first place? In other words, if Alice goes back in time and kills her grandfather Bob, she won’t have been born and can’t carry out her murderous plot. One way to avoid this is the idea of branching universes, in which the universe splits into two with each instance of time travel, leading to an infinite number. Another idea is infinite copies of parallel universes that evolve differently over time. But physicists would prefer to avoid the infinite if possible. Now Barak Shoshany and Jacob Hauser at the Perimeter Institute in Canada have come up with a model of time travel that merely…

1 minuti
tiny folded dna machines may boost antibacterials

ORIGAMI can be deadly when made of DNA. Tiny devices created from intricately folded DNA strands can boost the potency of antibacterial chemicals by increasing their contact with microbes. When tested on two common kinds of bacteria, the folded DNA slowed their growth rate. Ioanna Mela at the University of Cambridge says a similar approach could be directed against any kind of microbe. “This is proof of principle.” DNA is best known for storing our genetic information, but it can also be folded into 3D structures called DNA origami. Additionally, small lengths of DNA can be designed to have the exact shape needed to bind to other biological molecules, like a key fitting into a lock. Mela’s team combined these two functions to create a flat platform of DNA with five wells, each…